JP2012221401A - Electronic instrument and selection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire number values showing picked up images themselves simply which enables simple comparison between the picked up images.SOLUTION: An electronic instrument 1 includes: an imaging unit 10; and an extracting unit 20 which extracts rhythm information showing a pattern of spatial change of a picked up image picked up by the imaging unit 10. The extracting unit 20 includes: a first storage unit 22 which stores the rhythm information in association with a pattern of spatial change of a unit region within an image; a calculation unit 24 which calculates a pattern of spatial change of a unit region in the picked up image picked up by the imaging unit 10; and a selection unit 26 which selects the rhythm information corresponding to the pattern of spatial change of the unit region calculated by the calculation unit 24 from the first storage unit 22.

Description

  The present invention relates to an electronic device and a selection method.

  Conventionally, a technique for extracting a predetermined object (for example, a human face) from a moving image by pattern matching has been disclosed (for example, see Patent Document 1). According to Patent Document 1, an imaging area of a predetermined object can be shown on the display screen.

JP 2009-31469 A

However, the technique disclosed in Patent Document 1 has a problem that the captured images themselves cannot be compared because the captured images themselves are not digitized (indexed). Furthermore, since the captured images cannot be compared, various application processes that apply the comparison results between the captured images (for example, grouping of captured images based on the similarity of captured images, similarity of captured images by each imaging device) There is a problem that grouping of imaging devices based on degree, extraction of a captured image similar to a reference captured image, and extraction of similar points from different images) cannot be realized.
The present invention has been made in view of the above problems, and provides an electronic apparatus that can easily acquire a numerical value (an index) indicating a captured image itself that can easily compare captured images.

  In order to solve the above problem, an electronic device according to one embodiment of the present invention stores rhythm information representing a spatial change pattern of an image in association with a spatial change pattern of a unit region in the image. A storage unit, an imaging unit, a calculation unit that calculates a unit area change pattern in a captured image captured by the imaging unit, and the rhythm information corresponding to the unit region change pattern calculated by the calculation unit And a selection unit that selects the storage unit from the storage unit.

  In the electronic apparatus, the storage unit stores the rhythm information in association with a combination of a first pattern that is a unit area change pattern and a second pattern that is a unit area change pattern. The calculation unit calculates a change pattern of a unit area constituting a main object in the one captured image and a change pattern of a unit area constituting a part other than the main object, and the selection unit calculates the calculation The first pattern corresponds to the pattern of change of the unit area constituting the main object calculated by the unit, and the pattern of change of the unit area constituting the part other than the main object calculated by the calculation unit The rhythm information corresponding to the second pattern may be selected from the storage unit.

  In the electronic apparatus, the unit area is a pixel group including a predetermined number of adjacent pixels, and the change pattern of the unit area is an average pixel value, a maximum pixel value, a minimum pixel value, or It may be information indicating a spatial change in the median value of the pixel values.

  In the electronic device, the unit region is a pixel group including a predetermined number of adjacent pixels, and the change pattern of the unit region is a change in the frequency region and the time region based on information from each pixel in the pixel group. May be extracted as a rhythm.

  In the electronic device, the unit area is a pixel group including adjacent pixels having a pixel value difference equal to or less than a predetermined value, and the change pattern of the unit area includes an average pixel value and a maximum pixel value for each pixel group. , Information indicating a spatial change in the minimum pixel value or the median value of the pixel values.

  In the electronic apparatus, the unit area change pattern may be information indicating a distribution of pixel groups including adjacent pixels having a pixel value difference equal to or less than a predetermined value.

  In order to solve the above problem, a selection method according to another aspect of the present invention stores rhythm information representing a spatial change pattern of an image in association with a spatial change pattern of a unit region in the image. In the electronic device including the storage unit, the selection method of selecting the rhythm information of the captured image captured by the imaging unit, wherein the calculation unit of the electronic device calculates a pattern of change of the unit region in the captured image The selection unit of the electronic device selects the rhythm information corresponding to the change pattern of the unit area calculated by the calculation unit from the storage unit.

  According to the present invention, a numerical value (rhythm information) indicating a captured image itself can be easily acquired from the captured image. Further, the captured images can be easily compared using the numerical values. Furthermore, the comparison results between the captured images can be applied to various application processes (for example, grouping of the captured images based on the similarity of the captured images, grouping of the imaging devices based on the similarity of the captured images by the respective image capturing devices, and imaging as a reference) It can be used for extraction of captured images similar to images and extraction of similar points from different images).

It is a lineblock diagram showing an example of electronic equipment 1 by one embodiment of the present invention. FIG. 6 is an explanatory diagram for explaining processing of an extraction unit 20. FIG. 6 is an explanatory diagram for explaining processing of an extraction unit 20. 3 is a flowchart illustrating an example of an operation of the electronic device 1. FIG. 10 is an explanatory diagram for explaining another process of the extraction unit 20.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram illustrating an example of an electronic apparatus 1 according to an embodiment of the present invention.

  The electronic device 1 is, for example, a digital camera, and includes an imaging unit 10, an extraction unit 20, and a second storage unit 40 as illustrated in FIG. The extraction unit 20 includes a first storage unit 22, a calculation unit 24, and a selection unit 26.

  The imaging unit 10 is a camera that captures still images and moving images. The extraction unit 20 extracts rhythm information representing a spatial change pattern of the captured image (still image) captured by the imaging unit 10. The second storage unit 40 stores the rhythm information extracted by the extraction unit 20.

  The first storage unit 22 stores the rhythm information described above in association with a spatial change pattern of a unit region (hereinafter referred to as a pixel group) in the image. Specifically, the first storage unit 22 stores rhythm information in association with a combination of a first pattern that is a pixel group change pattern and a second pattern that is a pixel group change pattern.

  A pixel group is composed of a predetermined number of adjacent pixels. The change pattern of the pixel group in the image is information indicating a spatial change in the average pixel value for each pixel group (the average value of the pixel values of a plurality of pixels in the pixel group). A spatial change is a change according to the position in the image.

  The first pattern is a change pattern of the pixel group as described above, but mainly represents a change pattern of the pixel group constituting the main object (for example, an object imaged in the central area) in the image. Is. On the other hand, the second pattern mainly represents a change pattern of a pixel group constituting other than the main object in the image.

  The mode of storing rhythm information in association with the combination of the first pattern and the second pattern is not particularly limited, but in the present embodiment, the first storage unit 22 stores the first pattern and the second pattern. The rhythm information is stored for each combination of identification information for identifying the first pattern (hereinafter referred to as first pattern identification information) and identification information for identifying the second pattern (hereinafter referred to as second pattern identification information). It is set as the mode to do. In addition, the aspect which memorize | stores a 1st pattern and a 2nd pattern, respectively, and memorize | stores rhythm information for every combination of 1st pattern identification information and 2nd pattern identification information is each information (1st pattern, 2nd pattern). , Rhythm information) is advantageous for maintenance.

  In addition, each information which the 1st memory | storage part 22 memorize | stores may be what the electronic device 1 created, what the electronic device 1 acquired from the outside, and the user of the electronic device 1 It may be entered. In addition, as an aspect which the electronic device 1 produces, the calculation part 24 may calculate the 1st pattern and the 2nd pattern beforehand (it may be a sample image (the image imaged by the imaging part 10), or from the outside. The first pattern and the second pattern are calculated based on the acquired first pattern, and the first pattern, the second pattern, and the rhythm information are stored in the first storage unit 22.

  Hereinafter, the processing performed by the extraction unit 20 will be described in detail with reference to FIGS. 2 and 3. 2 and 3 are explanatory diagrams for explaining the processing of the extraction unit 20.

  An image P shown in FIG. 2A is an example of a sample image for calculating the first pattern and the second pattern. Specifically, the sample image P is a captured image that is captured by the imaging unit 10 using a reed placed in front of the screen as a subject.

O (X _j , Y _n ), O (X _j , Y _o ), O (X _k , Y _n ), and O (X _k , Y _o ) in FIG. 2A constitute a main object (兜). It is an example of a pixel group. The average pixel value of the pixel group O (X _j , Y _n ) is a pixel value representing gold, the average pixel value of the pixel group O (X _j , Y _o ) is a pixel value representing amber, and the pixel group O (X _k , Y _n ) and the average pixel value of the pixel group O (X _k , Y _o ) are pixel values representing black.

_B in FIG. _{2 (a) (X j,} Y l), B (X j, Y m), B (X j, Y p), B (X k, Y l), B (X k, Y m) , B (X _k , Y _p ) is an example of a pixel group that constitutes other than the main object (兜). The average pixel values of the pixel groups B (X _j , Y _l ) and B (X _k , Y _l ) are the pixel values representing gray, the pixel groups B (X _j , Y _m ) and B (X _k , Y _m ) It is assumed that the average pixel value is a pixel value representing a hill-brow color, and the average pixel values of the pixel groups B (X _j , Y _p ) and B (X _k , Y _p ) are pixel values representing an ivory color.

FIG. 2B is an example of the first pattern based on FIG. Specifically, FIG. 2B shows a change pattern of pixel groups constituting the main object (兜) of the sample image P shown in FIG. In FIG. 2B, for example, the value “gold color” defined by X _j and Y _n indicates that the average pixel value of the pixel group O (X _j , Y _n ) shown in FIG. 2A is gold. Is shown. That is, FIG. 2B as a whole represents a pattern of a spatial color change (change according to position (X, Y)) of the main object (兜). Note that the first pattern identification information for identifying the first pattern shown in FIG. 2B is “P1-I”.

FIG. 2C is an example of the second pattern based on FIG. Specifically, FIG. 2C shows a pattern of changes in pixel groups constituting the main object (wall) other than the main object (wall) in the sample image P shown in FIG. 2A. In FIG. 2C, for example, the value “gray” defined by X _j and Y _l means that the average pixel value of the pixel group B (X _j , Y _l ) shown in FIG. 2A is gray. Is shown. That is, FIG. 2C as a whole represents a pattern of spatial color changes (changes according to position (X, Y)) other than the main object (wall surface, screen, and base). Note that the second pattern identification information for identifying the second pattern shown in FIG. 2C is “P2-J”.

The first storage unit 22 stores the first pattern shown in FIG. 2B and the second pattern shown in FIG. 2C calculated from the sample image P shown in FIG. Actually, the first storage unit 22 stores a plurality of first patterns and a plurality of second patterns calculated from a plurality of sample images. For example, the first storage unit 22 stores N ₁ (N ₁ is N or less) first patterns and N ₂ (N ₂ is N or less) second patterns calculated from N sample images. (The number of first patterns “N ₁ ” and the number of second patterns “N ₂ ” do not necessarily match).

FIG. 3 is an example of rhythm information for each combination of the first pattern identification information and the second pattern identification information. Specifically, the rhythm information shown in FIG. 3, _{N 1} pieces of the first pattern identification information ( "P1-1" - _{"P1-N 1")} and _{N 2} pieces of the second pattern ( "P1-1" _{N 1} × _{N 2} pieces of rhythm information corresponding to the combination of _{N 1} × _{N 2} Street - _{"P1-N 2")} ( "R (1, 1)" - _{"R (N} 1, N _2")) It is.

That is, the first storage unit 22, as shown in FIG. 3, each combination of the second pattern identification information for identifying the first pattern identification information and N ₂ pieces of the second pattern that identifies the N ₁ pieces of first pattern N ₁ × N ₂ pieces of rhythm information are stored. For example, in FIG. 3, the first storage unit 22, as one of _{N 1} × _{N 2} pieces of rhythm information, the first pattern identification information for identifying the first pattern shown in FIG. 2 (b) "P2- J ") and rhythm information" R (I, J) "is stored in association with the second pattern identification information" P2-J "for identifying the second pattern shown in FIG.
As described above, as illustrated in FIGS. 2B, 2C, and 3, the first storage unit 22 stores rhythm information in association with the combination of the first pattern and the second pattern.

  As shown in FIGS. 2B, 2C, and 3, the first storage unit 22 stores rhythm information in association with the combination of the first pattern and the second pattern. In this state, the calculation unit 24 extracts the main object from the captured image captured by the imaging unit 10.

  The calculation unit 24 that has extracted the main object calculates an average pixel value for each pixel group constituting the main object. That is, the calculation unit 24 calculates a spatial color change pattern of the pixel group that constitutes the main object. In addition, the calculation unit 24 calculates an average pixel value for each pixel group that constitutes other than the main object. That is, the calculation unit 24 calculates a spatial color change pattern of a pixel group that constitutes other than the main object. The calculation unit 24 supplies the calculated spatial color change pattern of the pixel group constituting the main object and the spatial color change pattern of the pixel group constituting the main object to the selection unit 26. .

  The selection unit 26 that has acquired the spatial color change pattern of the pixel group constituting the main object and the spatial color change pattern of the pixel group constituting the main object from the calculation unit 24, The first pattern corresponds to the spatial change pattern of the color of the pixel group constituting the object, and the second pattern corresponds to the spatial color change pattern of the pixel group constituting the object other than the main object. Rhythm information is selected from the first storage unit 22.

  For example, the selection unit 26 selects the first pattern that matches or most closely matches the spatial color change pattern of the pixel group that constitutes the main object, and the second pattern that forms a pair with the first pattern. Rhythm information corresponding to a combination of the selected first pattern and second pattern is selected from among the second patterns that match or most similar to the spatial color change pattern of the pixel group that constitutes other than the main object. To get. The selection unit 26 stores the acquired rhythm information in the second storage unit 40. The rhythm information stored in the second storage unit 40 is used for comparison between captured images.

  Hereinafter, the operation of the electronic apparatus 1 will be described using a flowchart. FIG. 4 is a flowchart illustrating an example of the operation of the electronic device 1. Note that at the time of disclosure of this flowchart, it is assumed that rhythm information is stored in the first storage unit 22 in association with the combination of the first pattern and the second pattern.

  The calculation unit 24 extracts a main object from the captured image (step S10). The calculating unit 24 calculates a spatial color change pattern of the pixel group constituting the main object (step S12). Specifically, the calculation unit 24 calculates an average pixel value for each pixel group constituting the main object. The calculation unit 24 supplies the selection unit 26 with the spatial color change pattern of the pixel group constituting the main object.

  In addition, the calculation unit 24 calculates a spatial color change pattern of the pixel group that constitutes other than the main object (step S14). Specifically, the calculation unit 24 calculates an average pixel value for each pixel group that constitutes other than the main object. The calculation unit 24 supplies the selection unit 26 with the spatial color change pattern of the pixel group that constitutes other than the main object.

  The selection unit 26 that has acquired the spatial color change pattern of the pixel group constituting the main object and the spatial color change pattern of the pixel group constituting the main object from the calculation unit 24, The first pattern corresponds to the spatial color change pattern of the pixel group constituting the object, and the second pattern corresponds to the spatial color change pattern of the pixel group constituting the object other than the main object. Rhythm information is selected from the first storage unit 22 (step S16), and the selected rhythm information is stored in the second storage unit 40. And this flowchart is complete | finished.

  In the flowchart shown in FIG. 4, after calculating the spatial color change pattern of the pixel group constituting the main object, the spatial color change pattern of the pixel group constituting the main object is calculated. However, after calculating the spatial color change pattern of the pixel group constituting the object other than the main object, the spatial color change pattern of the pixel group constituting the main object may be calculated.

  As described above, according to the electronic device 1, rhythm information that is a numerical value indicating the captured image itself can be easily acquired from the object. In addition, captured images can be easily compared using rhythm information represented by numerical values. Furthermore, the comparison results between the captured images can be applied to various application processes (for example, grouping of the captured images based on the similarity of the captured images, grouping of the imaging devices based on the similarity of the captured images by the respective image capturing devices, and imaging as a reference) It can be used for extraction of objects similar to images and extraction of similar points from different images).

  Further, in the electronic apparatus 1, in order to extract the rhythm information of the captured image by distinguishing between a pixel group including pixels constituting the main object and a pixel group including pixels other than the main object, that is, the space of the main object. Since the rhythm information of the captured image is extracted in consideration of the spatial color change pattern other than the main object in addition to the typical color change pattern, the rhythm information can be extracted with high accuracy.

  In the above-described embodiment, information indicating a spatial change of an average pixel value (average value of pixel values of a plurality of pixels in a pixel group) for each pixel group as a spatial color change pattern of the pixel group. However, the value used as the spatial color change pattern of the pixel group is not limited to this. For example, information indicating a spatial change in the maximum pixel value for each pixel group (the maximum value of the pixel values of a plurality of pixels in the pixel group), the minimum pixel value for each pixel group (pixels of the plurality of pixels in the pixel group) Information indicating the spatial change of the minimum value), information indicating the spatial change of the median pixel value of each pixel group (the median value of the pixel values of a plurality of pixels in the pixel group), etc. It may be used as a color change pattern.

Also, instead of information indicating the spatial change of the average pixel value (maximum pixel value, minimum pixel value, or median value of pixel values) for each pixel group, information indicating changes in the frequency domain and time domain for each pixel group May be used as a spatial color change pattern of a pixel group. In other words, a change pattern of a pixel group (unit region) composed of a predetermined number of adjacent pixels is information obtained by extracting changes in the frequency domain and the time domain as rhythms from information by each pixel in the pixel group. Also good.
In addition, as a method for extracting changes in the frequency domain and the time domain, for example, it is obtained by performing multi-resolution analysis on imaging information in each pixel in the unit area by discrete wavelet transform, and each pixel in the unit area The imaging information in can be obtained by dividing every certain frequency band and subjecting them to window Fourier transform for each set frequency band. As a result, it is possible to change the image into a rhythmic change in the frequency domain and the time domain, and it is possible to compare the features together with extraction of features in the rhythm.

  In the above-described embodiment, a predetermined number of adjacent pixels are used as a pixel group, and information indicating a spatial change in an average pixel value (maximum pixel value, minimum pixel value, or median value of pixel values) for each pixel group. This is a mode of extracting the rhythm information corresponding to the captured image based on the pattern of the color change of the pixel group, but the mode of extracting the rhythm information corresponding to the captured image is not limited to this.

  As an example, an adjacent pixel having a pixel value difference equal to or less than a predetermined value is defined as a pixel group, and a spatial change in an average pixel value (maximum pixel value, minimum pixel value, or median value of pixel values) for each pixel group. The information shown may be a pattern of spatial color change of the pixel group, and rhythm information corresponding to the captured image may be extracted based on the pattern. FIG. 5 is an explanatory diagram for explaining another process of the extraction unit 20.

FIG. 5A shows an adjacent image having a pixel value difference equal to or less than a predetermined number in the pixels constituting the main object (兜) shown in FIG. 2 as a pixel group constituting the main object. In the pixels constituting other than the above, adjacent images having a pixel value difference equal to or less than a predetermined number are schematically shown as pixel groups constituting the main object. Specifically, O ₁ and O ₂ are pixel groups that constitute the main object, and B ₁ and B ₂ are pixel groups that constitute other than the main object. The difference between the pixel value of the wall surface (value indicating gray) and the pixel value of the base surface (value indicating ivory color), and the pixel value of the main body part of the cocoon (value indicating black color) and the pixel of the fabric part inside the main body It is assumed that the difference between the values (values indicating amber color) is not more than a predetermined value (see FIG. 2). In the example shown in FIG. 5, the number of pixel groups is reduced for convenience of explanation.

  FIG. 5B is an example of the first pattern in the pixel group shown in FIG. FIG. 5C is an example of the second pattern in the pixel group shown in FIG. 5B and 5C, each value (color) is an average pixel value. However, as described above, the maximum pixel value, the minimum pixel value, or the median value may be used.

  Also, the spatial information 1 to the spatial information n (n is an integer of 1 or more) shown in FIGS. 5B and 5C are information defining the spatial position, size, etc. of each pixel group. An example of the spatial information is the coordinates of the circumscribed circle circumscribing the pixel group, the coordinates of two opposite corners (two corners on the diagonal) of the circumscribed rectangle circumscribing the pixel group. Therefore, the first pattern shown in FIG. 5B stores the pixel value, position, size, etc. of each pixel group constituting the main object, and the second pattern shown in FIG. 5C is other than the main object. The pixel value, position, size, and the like of each pixel group that constitutes is stored.

  That is, the extraction unit 20 sets adjacent pixels whose pixel value difference is equal to or smaller than a predetermined value as shown in FIG. 5A as a pixel group, and sets the main object as the first pattern as shown in FIG. 5B. The information indicating the spatial change of the average pixel value for each pixel group constituting the pixel is stored, and the space of the average pixel value for each pixel group constituting other than the main object as shown in FIG. 5C as the second pattern Information indicative of a specific change is stored, rhythm information (not shown) corresponding to the combination of the first and second patterns is stored, and rhythm information corresponding to the captured image is extracted based on the information. Good. Even when rhythm information is extracted in this way, the same effects as those obtained when rhythm information is extracted based on the first and second patterns and rhythm information as shown in FIGS.

  If the amount of spatial information in FIGS. 5B and 5C is increased, the position and shape of each pixel group constituting the main object in the image and each pixel group constituting other than the main object are fine. Can express. That is, in the aspect described with reference to FIG. 5, adjacent pixels whose pixel value difference is equal to or smaller than a predetermined value are defined as pixel groups, and the spatial change in the distribution of pixel groups (that is, the position and shape of each pixel group). ) Is a pattern of spatial color change of the pixel group, and rhythm information corresponding to the captured image is extracted based on the pattern.

  In addition, as information indicating a spatial change in the distribution of pixel groups, for example, information regarding pixel groups for each space may be used instead of the position and shape of each pixel group. As information about the pixel group for each space, for example, a predetermined area in the image (for example, an upper left quarter area, an upper right quarter area, a lower left quarter area, a lower right area 4). Each pixel group that constitutes the main object, and each pixel group that constitutes other than the main object, the number of pixel groups, the size of each pixel group, the distribution of colors (pixel values), etc. It is.

  Note that a program for executing each process of the electronic apparatus 1 according to an embodiment of the present invention is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed. Thus, each process of the electronic device 1 may be performed. Here, the “computer system” may include an OS and hardware such as peripheral devices. Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used. The “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.

  Further, the “computer-readable recording medium” means a volatile memory (for example, DRAM (Dynamic DRAM) in a computer system that becomes a server or a client when a program is transmitted through a network such as the Internet or a communication line such as a telephone line. Random Access Memory)), etc., which hold programs for a certain period of time. The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Electronic device, 10 ... Imaging part, 20 ... Extraction part, 22 ... 1st memory | storage part, 24 ... Calculation part, 26 ... Selection part, 40 ... 2nd memory | storage part

Claims (7)

A storage unit for storing rhythm information representing a pattern of spatial change of the image in association with a pattern of spatial change of the unit area in the image;
An imaging unit;
A calculation unit that calculates a pattern of a change in unit area in a captured image captured by the imaging unit;
An electronic apparatus comprising: a selection unit that selects, from the storage unit, the rhythm information corresponding to the unit area change pattern calculated by the calculation unit. The electronic device according to claim 1,
The storage unit
Storing the rhythm information in association with a combination of a first pattern, which is a pattern of change in unit area, and a second pattern, which is a pattern of change in unit area,
The calculation unit includes:
Calculating a change pattern of a unit area constituting a main object and a change pattern of a unit area constituting a part other than the main object in the one captured image;
The selection unit includes:
The first pattern corresponds to the pattern of change of the unit area constituting the main object calculated by the calculation unit, and the pattern of change of the unit area constituting other than the main object calculated by the calculation unit The rhythm information corresponding to the second pattern is selected from the storage unit. The electronic device according to claim 1 or 2,
The unit area is
A pixel group consisting of a predetermined number of adjacent pixels,
The unit area change pattern is
An electronic device, which is information indicating a spatial change in an average pixel value, a maximum pixel value, a minimum pixel value, or a median value of pixel values for each pixel group. The electronic device according to claim 1 or 2,
The unit area is
A pixel group consisting of a predetermined number of adjacent pixels,
The unit area change pattern is
An electronic apparatus characterized by being information obtained by extracting changes in a frequency domain and a time domain as a rhythm from information by each pixel in the pixel group. The electronic device according to claim 1 or 2,
The unit area is
A pixel group consisting of adjacent pixels having a pixel value difference equal to or less than a predetermined value,
The unit area change pattern is
An electronic device, which is information indicating a spatial change in an average pixel value, a maximum pixel value, a minimum pixel value, or a median value of pixel values for each pixel group. The electronic device according to claim 1 or 2,
The unit area change pattern is
An electronic apparatus characterized by being information indicating a distribution of a pixel group composed of adjacent pixels having a pixel value difference equal to or less than a predetermined value. The rhythm of a captured image captured by an imaging unit in an electronic device including a storage unit that stores rhythm information representing a pattern of spatial change of an image in association with a pattern of spatial change of a unit area in the image A selection method for selecting information,
The calculation unit of the electronic device calculates a pattern of change of the unit area in the captured image,
The selection method of the electronic device, wherein the selection unit of the electronic device selects the rhythm information corresponding to the change pattern of the unit area calculated by the calculation unit from the storage unit.

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